– Did you visit the famous museum?– No. We ______ it, but we spent too much time shopping.A. could have visited B. must have visited can’t have visited D. shouldn’t have visited
Thecleverboymadeaholeinthewall,_____hecouldsee_____was goingoninsidethe house.
---Do you have anything to say for yourself? ---Yes, there is one point ________ I must stick to.
The thief went into the house at midnight, only ______ by the policemen hiding there.
In spite of the great difficulties, Helen Keller ______ studying and finally succeeded.
If you ______ succeed, you will have to work hard.